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Subject[PATCH v4 5/6] drm/virtio: batch display query
Date
Move virtio_gpu_notify() to higher-level functions for
virtio_gpu_cmd_get_display_info() and virtio_gpu_cmd_get_edids().

virtio_gpu_config_changed_work_func() and virtio_gpu_init() will
batch commands and notify only once per update

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
---
drivers/gpu/drm/virtio/virtgpu_kms.c | 2 ++
drivers/gpu/drm/virtio/virtgpu_vq.c | 2 --
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 4009c2f97d08..8fd7acef960f 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -44,6 +44,7 @@ static void virtio_gpu_config_changed_work_func(struct work_struct *work)
if (vgdev->has_edid)
virtio_gpu_cmd_get_edids(vgdev);
virtio_gpu_cmd_get_display_info(vgdev);
+ virtio_gpu_notify(vgdev);
drm_helper_hpd_irq_event(vgdev->ddev);
events_clear |= VIRTIO_GPU_EVENT_DISPLAY;
}
@@ -205,6 +206,7 @@ int virtio_gpu_init(struct drm_device *dev)
if (vgdev->has_edid)
virtio_gpu_cmd_get_edids(vgdev);
virtio_gpu_cmd_get_display_info(vgdev);
+ virtio_gpu_notify(vgdev);
wait_event_timeout(vgdev->resp_wq, !vgdev->display_info_pending,
5 * HZ);
return 0;
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 4e9b2f2e71bd..2e108b426244 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -775,7 +775,6 @@ int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev)
vgdev->display_info_pending = true;
cmd_p->type = cpu_to_le32(VIRTIO_GPU_CMD_GET_DISPLAY_INFO);
virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
- virtio_gpu_notify(vgdev);
return 0;
}

@@ -903,7 +902,6 @@ int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev)
cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_EDID);
cmd_p->scanout = cpu_to_le32(scanout);
virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
- virtio_gpu_notify(vgdev);
}

return 0;
--
2.18.2
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